How to stabiilize pH if it gets to low

I'm not sure that this will be a problem in my tank but, I was curious as to how I would maintain my pH If it gets lower than I would like it. Previously I had been using Seachem Nuetral Regulator to maintain my pH at 6.8. My pH never quite reached 7.0 while using Neutral Regulator. I had been advised to not use this product for several reasons so now, I use straight RO water and add Fluval Shrimp Mineral to keep my GH AT 5.

Now after several water changes over the course of a month, and having to top off my tank everyday because of the fan blowing on my water 24/7, my pH is 6.5. My RO water tests at a pH of 6.2 I know that even at 6.2 my Bee's will be fine, I'm just worried that if it gets to low it may negatively effect my RCS. My Substrate is black sand so it doesn't have the ability to buffer my pH either way.

What can I do to keep my pH at 6.6-6.8? I read somewhere on these forums that some people use Seachem Discus buffer. Is this safe for my shrimps or is there other things I can do to keep my pH within my target range?

Alright so it seems 1 to 2 teaspoons would be sufficent. For now I think I will just monitor my pH until or if it gets lower than I want it. I'm hesitant to use it for the moment though because I don't want drastic changes and, I really don't want to increase my KH. I'm way more concerned about the CRS than the RCS anyways.

If anyone has any advice they could add, I would greatly appreciate it.

__________________

If there's a solution to your problem then you have nothing to worry about. If there isn't, then you have nothing to worry about either.

my crystal reds dip in the ph of 5 range and do just fine gh is like 7 kh is like 2 so i dont think you need to worry to much about them just drip them slow when adding them. crs like lower ph any way so below 7 is good for them

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